Roofing Cost Calculator

A new asphalt-shingle roof typically costs $4–$8 per square foot installed, so a common 1,700 sq ft roof runs roughly $6,500–$13,000. Metal, tile, and wood cost more. Roof size, pitch, material, and tearing off the old roof all matter — enter your details and ZIP above for a local estimate.

Roofers price in "squares" (100 sq ft). Asphalt shingles commonly run $450–$900 per square installed; metal, tile, and slate cost considerably more. This calculator uses total square feet so you don't have to convert.

It can — toggle "tear off & dispose of old roof" above to include removal and disposal, which typically adds $1–$3.50 per square foot. Roofing over an existing single layer is sometimes possible and cheaper, but a full tear-off is usually recommended.

Premium materials (metal, tile, slate), steep or complex roofs with many valleys and penetrations, multiple existing layers to remove, and added work like new decking, flashing, or ventilation all raise the price.

Roughly: 3-tab asphalt 15–20 years, architectural asphalt 25–30, wood shake 25–30, metal 40–70, and tile or slate 50+ years. Longer-lasting materials cost more up front but can be cheaper per year of service.

A 2,000 square foot roof is about 20 squares. At typical asphalt-shingle prices that is usually several thousand to low five figures installed, and steeper or more complex roofs cost more. Enter your roof size, pitch, and material above for a ZIP-adjusted range.

Metal often costs two to three times asphalt up front but lasts 40 to 70 years versus 15 to 30, so the cost per year of life can be lower, and it helps with resale and summer energy bills. The metal-roof-vs-shingles guide below weighs it for your case.

Flashing around chimneys, valleys, and walls is part of a proper reroof and is included here; gutters are usually a separate line. Ask each bidder to spell out flashing, underlayment, drip edge, and ventilation so you compare complete quotes.